(Ardmoreite) - Oklahoma has more than 62 wineries, up from just three wineries in 2000 when State Question 688 established winery tasting rooms. The state ranks 31st in wine production and produces an average of 4,000 cases of wine per year. There are approximately 139 commercial vineyards operating 439 acres of bearing-age grape vines. Demand for Oklahoma-grown grapes far exceeds the current supply. This relatively young industry is valued at $98.5 million in economic impact to the state and supports 840 full-time equivalent jobs. These are just some of the findings of a recent study of 2010 data conducted by Frank, Rimerman and Co., LLP recognized as the leading research source on the US wine industry.